1.Ultra-yoroheje yibicuruzwa, bikwiriye gukoreshwa mumwanya muto.
2.uburyo bwihariye bwo kubyaza umusaruro, ibikoresho byose bibisi birashobora kwihanganira ubushyuhe bwinshi.
3.Uburyo bwo kuyungurura ni ubusanzwe F urwego, hamwe nuburwanya buto hamwe nubunini bwikirere.
4.Bisanzwe bikoreshwa mumirongo itagira umukungugu utanga ibinyabiziga nibikoresho